Sunny: UV Index & SPF

Avoid Sunburn, Track Vitamin D

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Sunny helps you understand the UV index and protect your skin. Know how long you can stay outside before sunburn risk increases. Get personalized time-until-sunburn estimates, SPF guidance, Vitamin D estimates, and Time in Daylight insights. Features: • Real-time UV Index for your current location • 10-day UV and weather forecast • Personalized sunburn risk based on your skin type, location, UV level, exposed skin, and SPF • Skin type setup via Apple Health, guided estimation, or manual entry • SPF guidance for applying, reapplying, and knowing when UV is low enough • Vitamin D estimates based on UV, skin type, exposed skin, and sunscreen • Time in Daylight insights with Apple Health when available • Live Activities for sun exposure sessions on your Lock Screen • Reliable sun exposure alarms that can alert you before you reach sunburn risk • Smart notifications for high UV, sunscreen, Vitamin D windows, and active sessions • Apple Health sync for Time in Daylight, UV exposure, and Vitamin D estimates • Science-based guidance using UV intensity, skin type, SPF, and exposed skin • Beautiful, simple UV-aware design that adapts its colors to the current sun intensity • Accessibility support with Dynamic Type and VoiceOver Privacy: • Sensitive health and skin information stays on your device • No account required *Sunny is for informational purposes only and does not provide medical advice, diagnosis, or treatment. Always use sunscreen as appropriate and consult a qualified healthcare professional for health-related decisions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Ratings & Reviews

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Fixed an issue when entering SPF. If you like Sunny, please leave a rating or review on the App Store. Or if you have any suggestions for new features or improvements, we’d love to hear from you at support@sunnyuv.app.

Version 1.0.1

The developer, Thomas Brandstaetter, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Location
    • Identifiers
    • Usage Data
    • Other Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • VoiceOver

    • Voice Control

    • Larger Text

    • Dark Interface

    • Differentiate Without Color Alone

    • Sufficient Contrast

    • Reduced Motion

Information

Seller
  • Thomas Brandstaetter e.U.
Size
  • 51.6 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 18.0 or later.
  • iPhone
    Requires iOS 18.0 or later.
  • Mac
    Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.0 or later.
Languages
  • English and German
Age Rating
9+
In-App Purchases
Yes
Copyright
  • © 2026 Thomas Brandstätter
  • Privacy Policy

    • More by Thomas Brandstaetter

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